Merge branch 'wren-dev'

fastapi_modules/fastapi_leaudit/services/impl/crossReviewServiceImpl.py

@@ -2,8 +2,13 @@
 
 from __future__ import annotations
 
+import io
 import logging
+from datetime import datetime
 from math import floor
+from urllib.parse import quote
+from xml.sax.saxutils import escape
+from zipfile import ZIP_DEFLATED, ZipFile
 
 from sqlalchemy import bindparam, text
 
@@ -49,6 +54,37 @@ from fastapi_modules.fastapi_leaudit.services.impl.documentServiceImpl import Do
 class CrossReviewServiceImpl(ICrossReviewService):
     """交叉评查服务实现。"""
 
+    _PROPOSAL_EXPORT_HEADERS: tuple[str, ...] = (
+        "任务名称",
+        "文档名称",
+        "意见分类",
+        "评查点名称",
+        "问题依据/命中内容",
+        "原问题说明",
+        "评查意见",
+        "分数调整",
+        "提案状态",
+        "发起人",
+        "提出时间",
+        "同意人数",
+        "同意人员",
+        "不同意人数",
+        "不同意人员",
+        "未投人数",
+        "未投人员",
+    )
+
+    _VOTE_EXPORT_HEADERS: tuple[str, ...] = (
+        "任务名称",
+        "文档名称",
+        "意见分类",
+        "评查点名称",
+        "发起人",
+        "投票人",
+        "投票状态",
+        "投票时间",
+    )
+
     _SCHEMA_BOOTSTRAP_STATEMENTS: tuple[str, ...] = (
         """
         CREATE TABLE IF NOT EXISTS leaudit_cross_review_tasks (
@@ -110,8 +146,11 @@ class CrossReviewServiceImpl(ICrossReviewService):
             id BIGINT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
             task_id BIGINT NOT NULL,
             document_id BIGINT NOT NULL,
-            rule_result_id BIGINT NOT NULL,
+            proposal_type VARCHAR(32) NOT NULL DEFAULT 'review_point',
+            rule_result_id BIGINT,
             proposer_id BIGINT NOT NULL,
+            evaluation_point_name VARCHAR(255),
+            extraction_result_text TEXT,
             proposed_score_delta NUMERIC(10, 2) NOT NULL,
             reason TEXT NOT NULL,
             status VARCHAR(32) NOT NULL DEFAULT 'pending',
@@ -564,6 +603,13 @@ class CrossReviewServiceImpl(ICrossReviewService):
                             WHERE rr.document_id = d.id
                               AND rr.run_id = d.current_run_id
                         ) es ON TRUE
+                        LEFT JOIN LATERAL (
+                            SELECT COALESCE(SUM(proposed_score_delta), 0) AS approved_delta
+                            FROM leaudit_cross_review_proposals p
+                            WHERE p.document_id = d.id
+                              AND p.status = 'approved'
+                              AND p.delete_time IS NULL
+                        ) pd ON TRUE
                         WHERE {whereSql}
                         ORDER BY d.created_at DESC, d.id DESC
                         LIMIT :limit OFFSET :offset
@@ -601,10 +647,16 @@ class CrossReviewServiceImpl(ICrossReviewService):
                     errorMessages=self._parse_text_array(row.get("error_messages")),
                     issueMessages=self._parse_text_array(row.get("issue_messages")),
                     manualMessages=self._parse_text_array(row.get("manual_messages")),
-                    finalScore=float(row.get("final_score") or 0),
+                    finalScore=float(row.get("final_score") or 0) + float(row.get("approved_delta") or 0),
                     fullScore=float(row.get("full_score") or 0),
-                    scoreSummary=str(row.get("score_summary") or ""),
-                    scorePercent=float(row.get("score_percent") or 0),
+                    scoreSummary=self._build_score_summary(
+                        float(row.get("final_score") or 0) + float(row.get("approved_delta") or 0),
+                        float(row.get("full_score") or 0),
+                    ),
+                    scorePercent=self._build_score_percent(
+                        float(row.get("final_score") or 0) + float(row.get("approved_delta") or 0),
+                        float(row.get("full_score") or 0),
+                    ),
                 )
                 for row in rows
             ]
@@ -738,13 +790,33 @@ class CrossReviewServiceImpl(ICrossReviewService):
         """创建交叉评查提案。"""
         async with GetAsyncSession() as session:
             await self._ensure_tables_ready(session)
+            proposalType = (Body.proposalType or "review_point").strip().lower()
+            if proposalType not in {"review_point", "supplement"}:
+                raise LeauditException(StatusCodeEnum.HTTP_400_BAD_REQUEST, "proposalType 仅支持 review_point、supplement")
             if Body.deductionScore == 0:
                 raise LeauditException(StatusCodeEnum.HTTP_400_BAD_REQUEST, "不允许创建 0 分提案")
 
             taskId = await self._resolve_task_id_for_document(session, Body.documentId, CurrentUserId)
             await self._ensure_task_member(session, taskId, CurrentUserId)
             await self._ensure_task_document(session, taskId, Body.documentId)
-            ruleResult = await self._load_rule_result(session, Body.reviewPointResultId, Body.documentId)
+
+            ruleResult = None
+            reviewPointResultId: int | None = None
+            evaluationPointName = (Body.evaluationPointName or "").strip()
+            extractionResultText = (Body.extractionResultText or "").strip()
+
+            if proposalType == "review_point":
+                if Body.reviewPointResultId is None:
+                    raise LeauditException(StatusCodeEnum.HTTP_400_BAD_REQUEST, "reviewPointResultId 不能为空")
+                reviewPointResultId = int(Body.reviewPointResultId)
+                ruleResult = await self._load_rule_result(session, reviewPointResultId, Body.documentId)
+                if not evaluationPointName:
+                    evaluationPointName = str(ruleResult.get("rule_name") or ruleResult.get("rule_id") or "")
+            else:
+                if not evaluationPointName:
+                    raise LeauditException(StatusCodeEnum.HTTP_400_BAD_REQUEST, "补充意见必须填写评查点名称")
+                if not extractionResultText:
+                    raise LeauditException(StatusCodeEnum.HTTP_400_BAD_REQUEST, "补充意见必须填写抽取结果")
 
             duplicateExists = bool(
                 await session.scalar(
@@ -754,29 +826,41 @@ class CrossReviewServiceImpl(ICrossReviewService):
                         FROM leaudit_cross_review_proposals
                         WHERE task_id = :task_id
                           AND document_id = :document_id
-                          AND rule_result_id = :rule_result_id
+                          AND proposal_type = :proposal_type
                           AND proposer_id = :proposer_id
                           AND status IN ('pending', 'approved')
                           AND delete_time IS NULL
+                          AND (
+                            (:proposal_type = 'review_point' AND rule_result_id = :rule_result_id)
+                            OR (
+                              :proposal_type = 'supplement'
+                              AND COALESCE(evaluation_point_name, '') = :evaluation_point_name
+                              AND COALESCE(extraction_result_text, '') = :extraction_result_text
+                            )
+                          )
                         LIMIT 1
                         """
                     ),
                     {
                         "task_id": taskId,
                         "document_id": Body.documentId,
-                        "rule_result_id": Body.reviewPointResultId,
+                        "proposal_type": proposalType,
+                        "rule_result_id": reviewPointResultId,
+                        "evaluation_point_name": evaluationPointName,
+                        "extraction_result_text": extractionResultText,
                         "proposer_id": CurrentUserId,
                     },
                 )
             )
             if duplicateExists:
-                raise LeauditException(StatusCodeEnum.HTTP_400_BAD_REQUEST, "当前评查点已存在您的有效提案")
+                raise LeauditException(StatusCodeEnum.HTTP_400_BAD_REQUEST, "当前内容已存在您的有效提案")
 
-            currentScore, fullScore = await self._calculate_current_score(session, Body.reviewPointResultId, Body.documentId)
-            if Body.deductionScore < 0 and currentScore <= 0:
-                raise LeauditException(StatusCodeEnum.HTTP_400_BAD_REQUEST, "当前分值已为 0，不能继续扣分")
-            if Body.deductionScore > 0 and currentScore >= fullScore:
-                raise LeauditException(StatusCodeEnum.HTTP_400_BAD_REQUEST, "当前分值已满分，不能继续加分")
+            if proposalType == "review_point":
+                currentScore, fullScore = await self._calculate_current_score(session, reviewPointResultId, Body.documentId)
+                if Body.deductionScore < 0 and currentScore <= 0:
+                    raise LeauditException(StatusCodeEnum.HTTP_400_BAD_REQUEST, "当前分值已为 0，不能继续扣分")
+                if Body.deductionScore > 0 and currentScore >= fullScore:
+                    raise LeauditException(StatusCodeEnum.HTTP_400_BAD_REQUEST, "当前分值已满分，不能继续加分")
 
             await self._reset_transaction_for_write(session)
             async with session.begin():
@@ -785,17 +869,42 @@ class CrossReviewServiceImpl(ICrossReviewService):
                         text(
                             """
                             INSERT INTO leaudit_cross_review_proposals
-                                (task_id, document_id, rule_result_id, proposer_id, proposed_score_delta, reason, status)
+                                (
+                                    task_id,
+                                    document_id,
+                                    proposal_type,
+                                    rule_result_id,
+                                    proposer_id,
+                                    evaluation_point_name,
+                                    extraction_result_text,
+                                    proposed_score_delta,
+                                    reason,
+                                    status
+                                )
                             VALUES
-                                (:task_id, :document_id, :rule_result_id, :proposer_id, :proposed_score_delta, :reason, 'pending')
+                                (
+                                    :task_id,
+                                    :document_id,
+                                    :proposal_type,
+                                    :rule_result_id,
+                                    :proposer_id,
+                                    :evaluation_point_name,
+                                    :extraction_result_text,
+                                    :proposed_score_delta,
+                                    :reason,
+                                    'pending'
+                                )
                             RETURNING id, create_time
                             """
                         ),
                         {
                             "task_id": taskId,
                             "document_id": Body.documentId,
-                            "rule_result_id": Body.reviewPointResultId,
+                            "proposal_type": proposalType,
+                            "rule_result_id": reviewPointResultId,
                             "proposer_id": CurrentUserId,
+                            "evaluation_point_name": evaluationPointName or None,
+                            "extraction_result_text": extractionResultText or None,
                             "proposed_score_delta": Body.deductionScore,
                             "reason": Body.auditOpinion.strip(),
                         },
@@ -965,6 +1074,74 @@ class CrossReviewServiceImpl(ICrossReviewService):
                 pendingProposals=pendingProposals,
             )
 
+    async def ExportDocumentProposals(self, CurrentUserId: int, DocumentId: int) -> tuple[bytes, str]:
+        """导出文档交叉评查意见 Excel。"""
+        async with GetAsyncSession() as session:
+            await self._ensure_tables_ready(session)
+            taskId = await self._resolve_task_id_for_document(session, DocumentId, CurrentUserId)
+            await self._ensure_task_member(session, taskId, CurrentUserId)
+
+            documentMeta = await self._load_document_export_meta(session, taskId, DocumentId)
+            proposalPage = await self._build_document_proposals_page(session, CurrentUserId, taskId, DocumentId, 1, 1000)
+
+            defaultRows: list[dict[str, object]] = []
+            supplementRows: list[dict[str, object]] = []
+            voteRows: list[dict[str, object]] = []
+            taskMembers = await self._load_task_member_names(session, taskId)
+
+            for item in proposalPage.items:
+                row = self._build_export_summary_row(
+                    taskId=taskId,
+                    taskName=documentMeta["task_name"],
+                    documentId=DocumentId,
+                    documentName=documentMeta["document_name"],
+                    item=item,
+                )
+                if item.proposalType == "supplement":
+                    supplementRows.append(row)
+                else:
+                    defaultRows.append(row)
+
+                votedNames = {vote.voter for vote in item.votes}
+                for vote in item.votes:
+                    voteRows.append(
+                        {
+                            "任务名称": documentMeta["task_name"],
+                            "文档名称": documentMeta["document_name"],
+                            "意见分类": "补充意见" if item.proposalType == "supplement" else "默认规则意见",
+                            "评查点名称": item.evaluationPointName,
+                            "发起人": item.proposer,
+                            "投票人": vote.voter,
+                            "投票结果": self._translate_vote_type(vote.voteType),
+                            "投票时间": "",
+                        }
+                    )
+                for _, memberName in taskMembers.items():
+                    if memberName in votedNames:
+                        continue
+                    voteRows.append(
+                        {
+                            "任务名称": documentMeta["task_name"],
+                            "文档名称": documentMeta["document_name"],
+                            "意见分类": "补充意见" if item.proposalType == "supplement" else "默认规则意见",
+                            "评查点名称": item.evaluationPointName,
+                            "发起人": item.proposer,
+                            "投票人": memberName,
+                            "投票结果": "未投",
+                            "投票时间": "",
+                        }
+                    )
+
+            workbook = self._build_simple_xlsx(
+                sheets=[
+                    ("默认规则意见", list(self._PROPOSAL_EXPORT_HEADERS), defaultRows),
+                    ("补充意见", list(self._PROPOSAL_EXPORT_HEADERS), supplementRows),
+                    ("投票明细", list(self._VOTE_EXPORT_HEADERS), voteRows),
+                ]
+            )
+            safeName = quote(f"交叉评查意见_{documentMeta['document_name']}_{datetime.now().strftime('%Y%m%d_%H%M%S')}.xlsx")
+            return workbook, safeName
+
     async def UploadTaskDocument(
         self,
         CurrentUserId: int,
@@ -1105,8 +1282,11 @@ class CrossReviewServiceImpl(ICrossReviewService):
                         p.id,
                         p.task_id,
                         p.document_id,
+                        p.proposal_type,
                         p.rule_result_id,
                         p.proposer_id,
+                        p.evaluation_point_name,
+                        p.extraction_result_text,
                         p.proposed_score_delta,
                         p.reason,
                         p.status,
@@ -1145,7 +1325,10 @@ class CrossReviewServiceImpl(ICrossReviewService):
             items.append(
                 CrossReviewProposalItemVO(
                     proposalId=proposalId,
-                    evaluationPointName=str(row.get("rule_name") or ""),
+                    proposalType=str(row.get("proposal_type") or "review_point"),
+                    reviewPointResultId=self._to_int(row.get("rule_result_id")),
+                    evaluationPointName=str(row.get("evaluation_point_name") or row.get("rule_name") or ""),
+                    extractionResultText=str(row.get("extraction_result_text") or ""),
                     proposedScore=float(row["proposed_score_delta"] or 0),
                     reason=str(row.get("reason") or ""),
                     proposer=str(row.get("proposer_name") or ""),
@@ -1160,7 +1343,7 @@ class CrossReviewServiceImpl(ICrossReviewService):
                     disagreeVoters=disagreeVoters,
                     pendingVoters=pendingVoters,
                     canVote=canVote,
-                    problemMessage=str(row.get("fail_message") or row.get("rule_name") or ""),
+                    problemMessage=str(row.get("fail_message") or row.get("extraction_result_text") or row.get("rule_name") or ""),
                     proposerId=int(row["proposer_id"]),
                     createdAt=row.get("create_time"),
                     status=str(row.get("status") or "pending"),
@@ -1288,6 +1471,38 @@ class CrossReviewServiceImpl(ICrossReviewService):
             raise LeauditException(StatusCodeEnum.HTTP_404_NOT_FOUND, "交叉评查提案不存在")
         return row
 
+    async def _load_document_export_meta(self, session, taskId: int, documentId: int) -> dict[str, str]:
+        row = (
+            await session.execute(
+                text(
+                    """
+                    SELECT
+                        t.task_name,
+                        COALESCE(f.file_name, d.normalized_name, CAST(d.id AS TEXT)) AS document_name
+                    FROM leaudit_cross_review_tasks t
+                    JOIN leaudit_documents d
+                      ON d.id = :document_id
+                    LEFT JOIN leaudit_document_files f
+                      ON f.document_id = d.id
+                     AND f.is_active = true
+                     AND f.deleted_at IS NULL
+                     AND f.file_role IN ('original', 'primary')
+                    WHERE t.id = :task_id
+                      AND t.delete_time IS NULL
+                      AND d.deleted_at IS NULL
+                    LIMIT 1
+                    """
+                ),
+                {"task_id": taskId, "document_id": documentId},
+            )
+        ).mappings().first()
+        if not row:
+            raise LeauditException(StatusCodeEnum.HTTP_404_NOT_FOUND, "导出目标不存在")
+        return {
+            "task_name": str(row.get("task_name") or f"任务{taskId}"),
+            "document_name": str(row.get("document_name") or f"文档{documentId}"),
+        }
+
     async def _load_task_member_names(self, session, taskId: int) -> dict[int, str]:
         rows = (
             await session.execute(
@@ -1469,6 +1684,41 @@ class CrossReviewServiceImpl(ICrossReviewService):
             if not exists:
                 raise LeauditException(StatusCodeEnum.HTTP_500_INTERNAL_SERVER_ERROR, f"交叉评查表未初始化: {tableName}")
 
+        proposalColumns = await self._load_table_columns(session, "leaudit_cross_review_proposals")
+        if "proposal_type" not in proposalColumns:
+            await session.execute(
+                text("ALTER TABLE leaudit_cross_review_proposals ADD COLUMN proposal_type VARCHAR(32) NOT NULL DEFAULT 'review_point'")
+            )
+        if "evaluation_point_name" not in proposalColumns:
+            await session.execute(
+                text("ALTER TABLE leaudit_cross_review_proposals ADD COLUMN evaluation_point_name VARCHAR(255)")
+            )
+        if "extraction_result_text" not in proposalColumns:
+            await session.execute(
+                text("ALTER TABLE leaudit_cross_review_proposals ADD COLUMN extraction_result_text TEXT")
+            )
+        if proposalColumns:
+            isRuleResultNotNull = bool(
+                await session.scalar(
+                    text(
+                        """
+                        SELECT 1
+                        FROM information_schema.columns
+                        WHERE table_schema = current_schema()
+                          AND table_name = 'leaudit_cross_review_proposals'
+                          AND column_name = 'rule_result_id'
+                          AND is_nullable = 'NO'
+                        LIMIT 1
+                        """
+                    )
+                )
+            )
+            if isRuleResultNotNull:
+                await session.execute(
+                    text("ALTER TABLE leaudit_cross_review_proposals ALTER COLUMN rule_result_id DROP NOT NULL")
+                )
+        await session.commit()
+
     async def _ensure_task_member(self, session, taskId: int, userId: int) -> None:
         """校验当前用户是否是任务成员。"""
         exists = bool(
@@ -1522,3 +1772,283 @@ class CrossReviewServiceImpl(ICrossReviewService):
         if isinstance(value, list):
             return [str(v) for v in value]
         return [str(value)]
+
+    def _build_score_summary(self, finalScore: float, fullScore: float) -> str:
+        if fullScore <= 0:
+            return "0/0"
+        return f"{round(finalScore, 1)}/{round(fullScore, 1)}"
+
+    def _build_score_percent(self, finalScore: float, fullScore: float) -> float:
+        if fullScore <= 0:
+            return 0.0
+        return round(finalScore / fullScore * 100, 1)
+
+    def _build_export_summary_row(
+        self,
+        taskId: int,
+        taskName: str,
+        documentId: int,
+        documentName: str,
+        item: CrossReviewProposalItemVO,
+    ) -> dict[str, object]:
+        return {
+            "任务名称": taskName,
+            "文档名称": documentName,
+            "意见分类": "补充意见" if item.proposalType == "supplement" else "默认规则意见",
+            "评查点名称": item.evaluationPointName,
+            "问题依据/命中内容": item.extractionResultText or item.problemMessage or "",
+            "原问题说明": item.problemMessage or "",
+            "评查意见": item.reason,
+            "分数调整": item.proposedScore,
+            "提案状态": self._translate_proposal_status(item.status),
+            "发起人": item.proposer,
+            "提出时间": self._format_datetime(item.createdAt),
+            "同意人数": len(item.agreeVoters),
+            "同意人员": "、".join(item.agreeVoters),
+            "不同意人数": len(item.disagreeVoters),
+            "不同意人员": "、".join(item.disagreeVoters),
+            "未投人数": len(item.pendingVoters),
+            "未投人员": "、".join(item.pendingVoters),
+        }
+
+    def _translate_vote_type(self, voteType: str) -> str:
+        return {
+            "agree": "同意",
+            "disagree": "不同意",
+            "cancel": "撤销",
+        }.get(voteType, voteType or "")
+
+    def _translate_proposal_status(self, status: str) -> str:
+        return {
+            "pending": "待定",
+            "approved": "已通过",
+            "rejected": "已驳回",
+            "cancelled": "已撤销",
+        }.get(status, status or "")
+
+    def _format_datetime(self, value) -> str:
+        if value is None:
+            return ""
+        if isinstance(value, datetime):
+            return value.strftime("%Y-%m-%d %H:%M:%S")
+        return str(value)
+
+    def _build_simple_xlsx(self, sheets: list[tuple[str, list[str], list[dict[str, object]]]]) -> bytes:
+        normalized_sheets: list[tuple[str, list[str], list[list[str]]]] = []
+        for sheetName, headers, rows in sheets:
+            tableRows = [[self._excel_cell_text(row.get(header)) for header in headers] for row in rows]
+            normalized_sheets.append((sheetName, headers, tableRows))
+
+        sharedStrings: list[str] = []
+        stringIndex: dict[str, int] = {}
+
+        def intern(value: str) -> int:
+            if value in stringIndex:
+                return stringIndex[value]
+            idx = len(sharedStrings)
+            stringIndex[value] = idx
+            sharedStrings.append(value)
+            return idx
+
+        for _, headers, rows in normalized_sheets:
+            for header in headers:
+                intern(header)
+            for row in rows:
+                for cell in row:
+                    intern(cell)
+
+        buffer = io.BytesIO()
+        with ZipFile(buffer, "w", ZIP_DEFLATED) as zf:
+            zf.writestr("[Content_Types].xml", self._xlsx_content_types(len(normalized_sheets)))
+            zf.writestr("_rels/.rels", self._xlsx_root_rels())
+            zf.writestr("xl/workbook.xml", self._xlsx_workbook([sheet[0] for sheet in normalized_sheets]))
+            zf.writestr("xl/_rels/workbook.xml.rels", self._xlsx_workbook_rels(len(normalized_sheets)))
+            zf.writestr("xl/styles.xml", self._xlsx_styles())
+            zf.writestr("xl/sharedStrings.xml", self._xlsx_shared_strings(sharedStrings))
+            for index, (_, headers, rows) in enumerate(normalized_sheets, start=1):
+                zf.writestr(f"xl/worksheets/sheet{index}.xml", self._xlsx_sheet(headers, rows, intern))
+            zf.writestr("docProps/core.xml", self._xlsx_core_props())
+            zf.writestr("docProps/app.xml", self._xlsx_app_props([sheet[0] for sheet in normalized_sheets]))
+        return buffer.getvalue()
+
+    def _excel_cell_text(self, value: object) -> str:
+        if value is None:
+            return ""
+        if isinstance(value, float):
+            return str(round(value, 2))
+        return str(value)
+
+    def _xlsx_content_types(self, sheetCount: int) -> str:
+        overrides = [
+            '<Override PartName="/xl/workbook.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml"/>',
+            '<Override PartName="/xl/styles.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.styles+xml"/>',
+            '<Override PartName="/xl/sharedStrings.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.sharedStrings+xml"/>',
+            '<Override PartName="/docProps/core.xml" ContentType="application/vnd.openxmlformats-package.core-properties+xml"/>',
+            '<Override PartName="/docProps/app.xml" ContentType="application/vnd.openxmlformats-officedocument.extended-properties+xml"/>',
+        ]
+        overrides.extend(
+            f'<Override PartName="/xl/worksheets/sheet{index}.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml"/>'
+            for index in range(1, sheetCount + 1)
+        )
+        return (
+            '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
+            '<Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types">'
+            '<Default Extension="rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/>'
+            '<Default Extension="xml" ContentType="application/xml"/>'
+            + "".join(overrides)
+            + "</Types>"
+        )
+
+    def _xlsx_root_rels(self) -> str:
+        return (
+            '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
+            '<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">'
+            '<Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" Target="xl/workbook.xml"/>'
+            '<Relationship Id="rId2" Type="http://schemas.openxmlformats.org/package/2006/relationships/metadata/core-properties" Target="docProps/core.xml"/>'
+            '<Relationship Id="rId3" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/extended-properties" Target="docProps/app.xml"/>'
+            "</Relationships>"
+        )
+
+    def _xlsx_workbook(self, sheetNames: list[str]) -> str:
+        sheets = "".join(
+            f'<sheet name="{escape(name)}" sheetId="{index}" r:id="rId{index}"/>'
+            for index, name in enumerate(sheetNames, start=1)
+        )
+        return (
+            '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
+            '<workbook xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" '
+            'xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">'
+            f"<sheets>{sheets}</sheets>"
+            "</workbook>"
+        )
+
+    def _xlsx_workbook_rels(self, sheetCount: int) -> str:
+        relationships = []
+        for index in range(1, sheetCount + 1):
+            relationships.append(
+                f'<Relationship Id="rId{index}" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/worksheet" Target="worksheets/sheet{index}.xml"/>'
+            )
+        relationships.append(
+            f'<Relationship Id="rId{sheetCount + 1}" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles" Target="styles.xml"/>'
+        )
+        relationships.append(
+            f'<Relationship Id="rId{sheetCount + 2}" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/sharedStrings" Target="sharedStrings.xml"/>'
+        )
+        return (
+            '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
+            '<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">'
+            + "".join(relationships)
+            + "</Relationships>"
+        )
+
+    def _xlsx_styles(self) -> str:
+        return (
+            '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
+            '<styleSheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main">'
+            '<fonts count="2">'
+            '<font><sz val="11"/><name val="Calibri"/></font>'
+            '<font><b/><sz val="11"/><name val="Calibri"/></font>'
+            '</fonts>'
+            '<fills count="3">'
+            '<fill><patternFill patternType="none"/></fill>'
+            '<fill><patternFill patternType="gray125"/></fill>'
+            '<fill><patternFill patternType="solid"><fgColor rgb="FFD1F41F"/><bgColor indexed="64"/></patternFill></fill>'
+            '</fills>'
+            '<borders count="2">'
+            '<border><left/><right/><top/><bottom/><diagonal/></border>'
+            '<border>'
+            '<left style="thin"><color auto="1"/></left>'
+            '<right style="thin"><color auto="1"/></right>'
+            '<top style="thin"><color auto="1"/></top>'
+            '<bottom style="thin"><color auto="1"/></bottom>'
+            '<diagonal/>'
+            '</border>'
+            '</borders>'
+            '<cellStyleXfs count="1"><xf numFmtId="0" fontId="0" fillId="0" borderId="0"/></cellStyleXfs>'
+            '<cellXfs count="2">'
+            '<xf numFmtId="0" fontId="0" fillId="0" borderId="1" xfId="0" applyBorder="1"/>'
+            '<xf numFmtId="0" fontId="1" fillId="2" borderId="1" xfId="0" applyFont="1" applyFill="1" applyBorder="1" applyAlignment="1">'
+            '<alignment vertical="center"/>'
+            '</xf>'
+            '</cellXfs>'
+            '<cellStyles count="1"><cellStyle name="Normal" xfId="0" builtinId="0"/></cellStyles>'
+            '</styleSheet>'
+        )
+
+    def _xlsx_shared_strings(self, values: list[str]) -> str:
+        items = "".join(f"<si><t>{escape(value)}</t></si>" for value in values)
+        return (
+            '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
+            f'<sst xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" count="{len(values)}" uniqueCount="{len(values)}">{items}</sst>'
+        )
+
+    def _xlsx_sheet(self, headers: list[str], rows: list[list[str]], intern) -> str:
+        all_rows: list[list[str]] = []
+        if headers:
+            all_rows.append(headers)
+        all_rows.extend(rows)
+        sheet_rows = []
+        for rowIndex, row in enumerate(all_rows, start=1):
+            cells = []
+            styleIndex = "1" if headers and rowIndex == 1 else "0"
+            for colIndex, value in enumerate(row, start=1):
+                colRef = self._xlsx_column_name(colIndex)
+                cells.append(f'<c r="{colRef}{rowIndex}" t="s" s="{styleIndex}"><v>{intern(value)}</v></c>')
+            sheet_rows.append(f'<row r="{rowIndex}" ht="26" customHeight="1">{"".join(cells)}</row>')
+        return (
+            '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
+            '<worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main">'
+            f'<sheetData>{"".join(sheet_rows)}</sheetData>'
+            '</worksheet>'
+        )
+
+    def _xlsx_column_name(self, columnIndex: int) -> str:
+        result = ""
+        current = columnIndex
+        while current > 0:
+            current, remainder = divmod(current - 1, 26)
+            result = chr(65 + remainder) + result
+        return result
+
+    def _xlsx_core_props(self) -> str:
+        now = datetime.utcnow().strftime("%Y-%m-%dT%H:%M:%SZ")
+        return (
+            '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
+            '<cp:coreProperties xmlns:cp="http://schemas.openxmlformats.org/package/2006/metadata/core-properties" '
+            'xmlns:dc="http://purl.org/dc/elements/1.1/" '
+            'xmlns:dcterms="http://purl.org/dc/terms/" '
+            'xmlns:dcmitype="http://purl.org/dc/dcmitype/" '
+            'xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">'
+            '<dc:creator>LeAudit</dc:creator>'
+            '<cp:lastModifiedBy>LeAudit</cp:lastModifiedBy>'
+            f'<dcterms:created xsi:type="dcterms:W3CDTF">{now}</dcterms:created>'
+            f'<dcterms:modified xsi:type="dcterms:W3CDTF">{now}</dcterms:modified>'
+            '</cp:coreProperties>'
+        )
+
+    def _xlsx_app_props(self, sheetNames: list[str]) -> str:
+        parts = "".join(f"<vt:lpstr>{escape(name)}</vt:lpstr>" for name in sheetNames)
+        return (
+            '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
+            '<Properties xmlns="http://schemas.openxmlformats.org/officeDocument/2006/extended-properties" '
+            'xmlns:vt="http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes">'
+            '<Application>LeAudit</Application>'
+            f'<TitlesOfParts><vt:vector size="{len(sheetNames)}" baseType="lpstr">{parts}</vt:vector></TitlesOfParts>'
+            '</Properties>'
+        )
+
+    async def _load_table_columns(self, session, tableName: str) -> set[str]:
+        rows = (
+            await session.execute(
+                text(
+                    """
+                    SELECT column_name
+                    FROM information_schema.columns
+                    WHERE table_schema = current_schema()
+                      AND table_name = :table_name
+                    """
+                ),
+                {"table_name": tableName},
+            )
+        ).mappings().all()
+        return {str(row["column_name"]) for row in rows if row.get("column_name")}